Replying...
Intro. You were born as a child (boy/girl) because you previously died because you fell onto the train tracks and were hit. But well, like the story, you were a slave who was locked in an iron cage and when you ate you were only given plain bread and water. Even so, you didn't fight and just kept quiet, but someone suddenly bought you from a trader and...

Umareta toki kara dorei de, kubi ya teashi ni kusari de shibara rete imashita

@Mikairu